#ifndef CURLINC_TYPECHECK_GCC_H
#define CURLINC_TYPECHECK_GCC_H
/***************************************************************************
 *                                  _   _ ____  _
 *  Project                     ___| | | |  _ \| |
 *                             / __| | | | |_) | |
 *                            | (__| |_| |  _ <| |___
 *                             \___|\___/|_| \_\_____|
 *
 * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
 *
 * This software is licensed as described in the file COPYING, which
 * you should have received as part of this distribution. The terms
 * are also available at https://curl.se/docs/copyright.html.
 *
 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
 * copies of the Software, and permit persons to whom the Software is
 * furnished to do so, under the terms of the COPYING file.
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 * KIND, either express or implied.
 *
 * SPDX-License-Identifier: curl
 *
 ***************************************************************************/

/* wraps curl_easy_setopt() with typechecking */

/* To add a new kind of warning, add an
 *   if(curlcheck_sometype_option(_curl_opt))
 *     if(!curlcheck_sometype(value))
 *       _curl_easy_setopt_err_sometype();
 * block and define curlcheck_sometype_option, curlcheck_sometype and
 * _curl_easy_setopt_err_sometype below
 *
 * NOTE: We use two nested 'if' statements here instead of the && operator, in
 *       order to work around gcc bug #32061. It affects only gcc 4.3.x/4.4.x
 *       when compiling with -Wlogical-op.
 *
 * To add an option that uses the same type as an existing option, you will
 * just need to extend the appropriate _curl_*_option macro
 */
#define curl_easy_setopt(handle, option, value)                                                 \
    __extension__({                                                                             \
        CURLoption _curl_opt = (option);                                                        \
        if (__builtin_constant_p(_curl_opt))                                                    \
        {                                                                                       \
            CURL_IGNORE_DEPRECATION(                                                            \
                if (curlcheck_long_option(_curl_opt)) if (!curlcheck_long(value))               \
                    _curl_easy_setopt_err_long();                                               \
                if (curlcheck_off_t_option(_curl_opt)) if (!curlcheck_off_t(value))             \
                    _curl_easy_setopt_err_curl_off_t();                                         \
                if (curlcheck_string_option(_curl_opt)) if (!curlcheck_string(value))           \
                    _curl_easy_setopt_err_string();                                             \
                if (curlcheck_write_cb_option(_curl_opt)) if (!curlcheck_write_cb(value))       \
                    _curl_easy_setopt_err_write_callback();                                     \
                if ((_curl_opt) == CURLOPT_RESOLVER_START_FUNCTION) if (                        \
                    !curlcheck_resolver_start_callback(value))                                  \
                    _curl_easy_setopt_err_resolver_start_callback();                            \
                if ((_curl_opt) == CURLOPT_READFUNCTION) if (!curlcheck_read_cb(value))         \
                    _curl_easy_setopt_err_read_cb();                                            \
                if ((_curl_opt) == CURLOPT_IOCTLFUNCTION) if (!curlcheck_ioctl_cb(value))       \
                    _curl_easy_setopt_err_ioctl_cb();                                           \
                if ((_curl_opt) == CURLOPT_SOCKOPTFUNCTION) if (!curlcheck_sockopt_cb(value))   \
                    _curl_easy_setopt_err_sockopt_cb();                                         \
                if ((_curl_opt) ==                                                              \
                    CURLOPT_OPENSOCKETFUNCTION) if (!curlcheck_opensocket_cb(value))            \
                    _curl_easy_setopt_err_opensocket_cb();                                      \
                if ((_curl_opt) == CURLOPT_PROGRESSFUNCTION) if (!curlcheck_progress_cb(value)) \
                    _curl_easy_setopt_err_progress_cb();                                        \
                if ((_curl_opt) == CURLOPT_DEBUGFUNCTION) if (!curlcheck_debug_cb(value))       \
                    _curl_easy_setopt_err_debug_cb();                                           \
                if ((_curl_opt) == CURLOPT_SSL_CTX_FUNCTION) if (!curlcheck_ssl_ctx_cb(value))  \
                    _curl_easy_setopt_err_ssl_ctx_cb();                                         \
                if (curlcheck_conv_cb_option(_curl_opt)) if (!curlcheck_conv_cb(value))         \
                    _curl_easy_setopt_err_conv_cb();                                            \
                if ((_curl_opt) == CURLOPT_SEEKFUNCTION) if (!curlcheck_seek_cb(value))         \
                    _curl_easy_setopt_err_seek_cb();                                            \
                if (curlcheck_cb_data_option(_curl_opt)) if (!curlcheck_cb_data(value))         \
                    _curl_easy_setopt_err_cb_data();                                            \
                if ((_curl_opt) == CURLOPT_ERRORBUFFER) if (!curlcheck_error_buffer(value))     \
                    _curl_easy_setopt_err_error_buffer();                                       \
                if ((_curl_opt) == CURLOPT_STDERR) if (!curlcheck_FILE(value))                  \
                    _curl_easy_setopt_err_FILE();                                               \
                if (curlcheck_postfields_option(_curl_opt)) if (!curlcheck_postfields(value))   \
                    _curl_easy_setopt_err_postfields();                                         \
                if ((_curl_opt) ==                                                              \
                    CURLOPT_HTTPPOST) if (!curlcheck_arr((value), struct curl_httppost))        \
                    _curl_easy_setopt_err_curl_httpost();                                       \
                if ((_curl_opt) == CURLOPT_MIMEPOST) if (!curlcheck_ptr((value), curl_mime))    \
                    _curl_easy_setopt_err_curl_mimepost();                                      \
                if (curlcheck_slist_option(_curl_opt)) if (!curlcheck_arr((value),              \
                                                                          struct curl_slist))   \
                    _curl_easy_setopt_err_curl_slist();                                         \
                if ((_curl_opt) == CURLOPT_SHARE) if (!curlcheck_ptr((value), CURLSH))          \
                    _curl_easy_setopt_err_CURLSH();)                                            \
        }                                                                                       \
        curl_easy_setopt(handle, _curl_opt, value);                                             \
    })

/* wraps curl_easy_getinfo() with typechecking */
#define curl_easy_getinfo(handle, info, arg)                                                     \
    __extension__({                                                                              \
        CURLINFO _curl_info = (info);                                                            \
        if (__builtin_constant_p(_curl_info))                                                    \
        {                                                                                        \
            CURL_IGNORE_DEPRECATION(                                                             \
                if (curlcheck_string_info(_curl_info)) if (!curlcheck_arr((arg), char *))        \
                    _curl_easy_getinfo_err_string();                                             \
                if (curlcheck_long_info(_curl_info)) if (!curlcheck_arr((arg), long))            \
                    _curl_easy_getinfo_err_long();                                               \
                if (curlcheck_double_info(_curl_info)) if (!curlcheck_arr((arg), double))        \
                    _curl_easy_getinfo_err_double();                                             \
                if (curlcheck_slist_info(_curl_info)) if (!curlcheck_arr((arg),                  \
                                                                         struct curl_slist *))   \
                    _curl_easy_getinfo_err_curl_slist();                                         \
                if (curlcheck_tlssessioninfo_info(                                               \
                        _curl_info)) if (!curlcheck_arr((arg), struct curl_tlssessioninfo *))    \
                    _curl_easy_getinfo_err_curl_tlssesssioninfo();                               \
                if (curlcheck_certinfo_info(_curl_info)) if (!curlcheck_arr(                     \
                                                                 (arg), struct curl_certinfo *)) \
                    _curl_easy_getinfo_err_curl_certinfo();                                      \
                if (curlcheck_socket_info(_curl_info)) if (!curlcheck_arr((arg), curl_socket_t)) \
                    _curl_easy_getinfo_err_curl_socket();                                        \
                if (curlcheck_off_t_info(_curl_info)) if (!curlcheck_arr((arg), curl_off_t))     \
                    _curl_easy_getinfo_err_curl_off_t();)                                        \
        }                                                                                        \
        curl_easy_getinfo(handle, _curl_info, arg);                                              \
    })

/*
 * For now, just make sure that the functions are called with three arguments
 */
#define curl_share_setopt(share, opt, param) curl_share_setopt(share, opt, param)
#define curl_multi_setopt(handle, opt, param) curl_multi_setopt(handle, opt, param)

/* the actual warnings, triggered by calling the _curl_easy_setopt_err*
 * functions */

/* To define a new warning, use _CURL_WARNING(identifier, "message") */
#define CURLWARNING(id, message)                                                  \
    static void __attribute__((__warning__(message))) __attribute__((__unused__)) \
    __attribute__((__noinline__)) id(void)                                        \
    {                                                                             \
        __asm__("");                                                              \
    }

CURLWARNING(_curl_easy_setopt_err_long, "curl_easy_setopt expects a long argument for this option")
CURLWARNING(_curl_easy_setopt_err_curl_off_t,
            "curl_easy_setopt expects a curl_off_t argument for this option")
CURLWARNING(_curl_easy_setopt_err_string,
            "curl_easy_setopt expects a "
            "string ('char *' or char[]) argument for this option")
CURLWARNING(_curl_easy_setopt_err_write_callback,
            "curl_easy_setopt expects a curl_write_callback argument for this option")
CURLWARNING(_curl_easy_setopt_err_resolver_start_callback,
            "curl_easy_setopt expects a "
            "curl_resolver_start_callback argument for this option")
CURLWARNING(_curl_easy_setopt_err_read_cb,
            "curl_easy_setopt expects a curl_read_callback argument for this option")
CURLWARNING(_curl_easy_setopt_err_ioctl_cb,
            "curl_easy_setopt expects a curl_ioctl_callback argument for this option")
CURLWARNING(_curl_easy_setopt_err_sockopt_cb,
            "curl_easy_setopt expects a curl_sockopt_callback argument for this option")
CURLWARNING(_curl_easy_setopt_err_opensocket_cb,
            "curl_easy_setopt expects a "
            "curl_opensocket_callback argument for this option")
CURLWARNING(_curl_easy_setopt_err_progress_cb,
            "curl_easy_setopt expects a curl_progress_callback argument for "
            "this option")
CURLWARNING(_curl_easy_setopt_err_debug_cb,
            "curl_easy_setopt expects a curl_debug_callback argument for this option")
CURLWARNING(_curl_easy_setopt_err_ssl_ctx_cb,
            "curl_easy_setopt expects a curl_ssl_ctx_callback argument for this option")
CURLWARNING(_curl_easy_setopt_err_conv_cb,
            "curl_easy_setopt expects a curl_conv_callback argument for this option")
CURLWARNING(_curl_easy_setopt_err_seek_cb,
            "curl_easy_setopt expects a curl_seek_callback argument for this option")
CURLWARNING(_curl_easy_setopt_err_cb_data,
            "curl_easy_setopt expects a "
            "private data pointer as argument for this option")
CURLWARNING(_curl_easy_setopt_err_error_buffer,
            "curl_easy_setopt expects a "
            "char buffer of CURL_ERROR_SIZE as argument for this option")
CURLWARNING(_curl_easy_setopt_err_FILE,
            "curl_easy_setopt expects a 'FILE *' argument for this option")
CURLWARNING(_curl_easy_setopt_err_postfields,
            "curl_easy_setopt expects a 'void *' or 'char *' argument for this option")
CURLWARNING(_curl_easy_setopt_err_curl_httpost,
            "curl_easy_setopt expects a 'struct curl_httppost *' "
            "argument for this option")
CURLWARNING(_curl_easy_setopt_err_curl_mimepost,
            "curl_easy_setopt expects a 'curl_mime *' "
            "argument for this option")
CURLWARNING(_curl_easy_setopt_err_curl_slist,
            "curl_easy_setopt expects a 'struct curl_slist *' argument for this option")
CURLWARNING(_curl_easy_setopt_err_CURLSH,
            "curl_easy_setopt expects a CURLSH* argument for this option")

CURLWARNING(_curl_easy_getinfo_err_string,
            "curl_easy_getinfo expects a pointer to 'char *' for this info")
CURLWARNING(_curl_easy_getinfo_err_long,
            "curl_easy_getinfo expects a pointer to long for this info")
CURLWARNING(_curl_easy_getinfo_err_double,
            "curl_easy_getinfo expects a pointer to double for this info")
CURLWARNING(_curl_easy_getinfo_err_curl_slist,
            "curl_easy_getinfo expects a pointer to 'struct curl_slist *' for "
            "this info")
CURLWARNING(_curl_easy_getinfo_err_curl_tlssesssioninfo,
            "curl_easy_getinfo expects a pointer to "
            "'struct curl_tlssessioninfo *' for this info")
CURLWARNING(_curl_easy_getinfo_err_curl_certinfo,
            "curl_easy_getinfo expects a pointer to "
            "'struct curl_certinfo *' for this info")
CURLWARNING(_curl_easy_getinfo_err_curl_socket,
            "curl_easy_getinfo expects a pointer to curl_socket_t for this info")
CURLWARNING(_curl_easy_getinfo_err_curl_off_t,
            "curl_easy_getinfo expects a pointer to curl_off_t for this info")

/* groups of curl_easy_setops options that take the same type of argument */

/* To add a new option to one of the groups, just add
 *   (option) == CURLOPT_SOMETHING
 * to the or-expression. If the option takes a long or curl_off_t, you do not
 * have to do anything
 */

/* evaluates to true if option takes a long argument */
#define curlcheck_long_option(option) (0 < (option) && (option) < CURLOPTTYPE_OBJECTPOINT)

#define curlcheck_off_t_option(option) \
    (((option) > CURLOPTTYPE_OFF_T) && ((option) < CURLOPTTYPE_BLOB))

/* evaluates to true if option takes a char* argument */
#define curlcheck_string_option(option)                                                           \
    ((option) == CURLOPT_ABSTRACT_UNIX_SOCKET || (option) == CURLOPT_ACCEPT_ENCODING ||           \
     (option) == CURLOPT_ALTSVC || (option) == CURLOPT_CAINFO || (option) == CURLOPT_CAPATH ||    \
     (option) == CURLOPT_COOKIE || (option) == CURLOPT_COOKIEFILE ||                              \
     (option) == CURLOPT_COOKIEJAR || (option) == CURLOPT_COOKIELIST ||                           \
     (option) == CURLOPT_CRLFILE || (option) == CURLOPT_CUSTOMREQUEST ||                          \
     (option) == CURLOPT_DEFAULT_PROTOCOL || (option) == CURLOPT_DNS_INTERFACE ||                 \
     (option) == CURLOPT_DNS_LOCAL_IP4 || (option) == CURLOPT_DNS_LOCAL_IP6 ||                    \
     (option) == CURLOPT_DNS_SERVERS || (option) == CURLOPT_DOH_URL || (option) == CURLOPT_ECH || \
     (option) == CURLOPT_EGDSOCKET || (option) == CURLOPT_FTP_ACCOUNT ||                          \
     (option) == CURLOPT_FTP_ALTERNATIVE_TO_USER || (option) == CURLOPT_FTPPORT ||                \
     (option) == CURLOPT_HSTS || (option) == CURLOPT_HAPROXY_CLIENT_IP ||                         \
     (option) == CURLOPT_INTERFACE || (option) == CURLOPT_ISSUERCERT ||                           \
     (option) == CURLOPT_KEYPASSWD || (option) == CURLOPT_KRBLEVEL ||                             \
     (option) == CURLOPT_LOGIN_OPTIONS || (option) == CURLOPT_MAIL_AUTH ||                        \
     (option) == CURLOPT_MAIL_FROM || (option) == CURLOPT_NETRC_FILE ||                           \
     (option) == CURLOPT_NOPROXY || (option) == CURLOPT_PASSWORD ||                               \
     (option) == CURLOPT_PINNEDPUBLICKEY || (option) == CURLOPT_PRE_PROXY ||                      \
     (option) == CURLOPT_PROTOCOLS_STR || (option) == CURLOPT_PROXY ||                            \
     (option) == CURLOPT_PROXY_CAINFO || (option) == CURLOPT_PROXY_CAPATH ||                      \
     (option) == CURLOPT_PROXY_CRLFILE || (option) == CURLOPT_PROXY_ISSUERCERT ||                 \
     (option) == CURLOPT_PROXY_KEYPASSWD || (option) == CURLOPT_PROXY_PINNEDPUBLICKEY ||          \
     (option) == CURLOPT_PROXY_SERVICE_NAME || (option) == CURLOPT_PROXY_SSL_CIPHER_LIST ||       \
     (option) == CURLOPT_PROXY_SSLCERT || (option) == CURLOPT_PROXY_SSLCERTTYPE ||                \
     (option) == CURLOPT_PROXY_SSLKEY || (option) == CURLOPT_PROXY_SSLKEYTYPE ||                  \
     (option) == CURLOPT_PROXY_TLS13_CIPHERS || (option) == CURLOPT_PROXY_TLSAUTH_PASSWORD ||     \
     (option) == CURLOPT_PROXY_TLSAUTH_TYPE || (option) == CURLOPT_PROXY_TLSAUTH_USERNAME ||      \
     (option) == CURLOPT_PROXYPASSWORD || (option) == CURLOPT_PROXYUSERNAME ||                    \
     (option) == CURLOPT_PROXYUSERPWD || (option) == CURLOPT_RANDOM_FILE ||                       \
     (option) == CURLOPT_RANGE || (option) == CURLOPT_REDIR_PROTOCOLS_STR ||                      \
     (option) == CURLOPT_REFERER || (option) == CURLOPT_REQUEST_TARGET ||                         \
     (option) == CURLOPT_RTSP_SESSION_ID || (option) == CURLOPT_RTSP_STREAM_URI ||                \
     (option) == CURLOPT_RTSP_TRANSPORT || (option) == CURLOPT_SASL_AUTHZID ||                    \
     (option) == CURLOPT_SERVICE_NAME || (option) == CURLOPT_SOCKS5_GSSAPI_SERVICE ||             \
     (option) == CURLOPT_SSH_HOST_PUBLIC_KEY_MD5 ||                                               \
     (option) == CURLOPT_SSH_HOST_PUBLIC_KEY_SHA256 || (option) == CURLOPT_SSH_KNOWNHOSTS ||      \
     (option) == CURLOPT_SSH_PRIVATE_KEYFILE || (option) == CURLOPT_SSH_PUBLIC_KEYFILE ||         \
     (option) == CURLOPT_SSLCERT || (option) == CURLOPT_SSLCERTTYPE ||                            \
     (option) == CURLOPT_SSLENGINE || (option) == CURLOPT_SSLKEY ||                               \
     (option) == CURLOPT_SSLKEYTYPE || (option) == CURLOPT_SSL_CIPHER_LIST ||                     \
     (option) == CURLOPT_TLS13_CIPHERS || (option) == CURLOPT_TLSAUTH_PASSWORD ||                 \
     (option) == CURLOPT_TLSAUTH_TYPE || (option) == CURLOPT_TLSAUTH_USERNAME ||                  \
     (option) == CURLOPT_UNIX_SOCKET_PATH || (option) == CURLOPT_URL ||                           \
     (option) == CURLOPT_USERAGENT || (option) == CURLOPT_USERNAME ||                             \
     (option) == CURLOPT_AWS_SIGV4 || (option) == CURLOPT_USERPWD ||                              \
     (option) == CURLOPT_XOAUTH2_BEARER || (option) == CURLOPT_SSL_EC_CURVES || 0)

/* evaluates to true if option takes a curl_write_callback argument */
#define curlcheck_write_cb_option(option) \
    ((option) == CURLOPT_HEADERFUNCTION || (option) == CURLOPT_WRITEFUNCTION)

/* evaluates to true if option takes a curl_conv_callback argument */
#define curlcheck_conv_cb_option(option)               \
    ((option) == CURLOPT_CONV_TO_NETWORK_FUNCTION ||   \
     (option) == CURLOPT_CONV_FROM_NETWORK_FUNCTION || \
     (option) == CURLOPT_CONV_FROM_UTF8_FUNCTION)

/* evaluates to true if option takes a data argument to pass to a callback */
#define curlcheck_cb_data_option(option)                                           \
    ((option) == CURLOPT_CHUNK_DATA || (option) == CURLOPT_CLOSESOCKETDATA ||      \
     (option) == CURLOPT_DEBUGDATA || (option) == CURLOPT_FNMATCH_DATA ||          \
     (option) == CURLOPT_HEADERDATA || (option) == CURLOPT_HSTSREADDATA ||         \
     (option) == CURLOPT_HSTSWRITEDATA || (option) == CURLOPT_INTERLEAVEDATA ||    \
     (option) == CURLOPT_IOCTLDATA || (option) == CURLOPT_OPENSOCKETDATA ||        \
     (option) == CURLOPT_PREREQDATA || (option) == CURLOPT_PROGRESSDATA ||         \
     (option) == CURLOPT_READDATA || (option) == CURLOPT_SEEKDATA ||               \
     (option) == CURLOPT_SOCKOPTDATA || (option) == CURLOPT_SSH_KEYDATA ||         \
     (option) == CURLOPT_SSL_CTX_DATA || (option) == CURLOPT_WRITEDATA ||          \
     (option) == CURLOPT_RESOLVER_START_DATA || (option) == CURLOPT_TRAILERDATA || \
     (option) == CURLOPT_SSH_HOSTKEYDATA || 0)

/* evaluates to true if option takes a POST data argument (void* or char*) */
#define curlcheck_postfields_option(option) \
    ((option) == CURLOPT_POSTFIELDS || (option) == CURLOPT_COPYPOSTFIELDS || 0)

/* evaluates to true if option takes a struct curl_slist * argument */
#define curlcheck_slist_option(option)                                       \
    ((option) == CURLOPT_HTTP200ALIASES || (option) == CURLOPT_HTTPHEADER || \
     (option) == CURLOPT_MAIL_RCPT || (option) == CURLOPT_POSTQUOTE ||       \
     (option) == CURLOPT_PREQUOTE || (option) == CURLOPT_PROXYHEADER ||      \
     (option) == CURLOPT_QUOTE || (option) == CURLOPT_RESOLVE ||             \
     (option) == CURLOPT_TELNETOPTIONS || (option) == CURLOPT_CONNECT_TO || 0)

/* groups of curl_easy_getinfo infos that take the same type of argument */

/* evaluates to true if info expects a pointer to char * argument */
#define curlcheck_string_info(info) \
    (CURLINFO_STRING < (info) && (info) < CURLINFO_LONG && (info) != CURLINFO_PRIVATE)

/* evaluates to true if info expects a pointer to long argument */
#define curlcheck_long_info(info) (CURLINFO_LONG < (info) && (info) < CURLINFO_DOUBLE)

/* evaluates to true if info expects a pointer to double argument */
#define curlcheck_double_info(info) (CURLINFO_DOUBLE < (info) && (info) < CURLINFO_SLIST)

/* true if info expects a pointer to struct curl_slist * argument */
#define curlcheck_slist_info(info) \
    (((info) == CURLINFO_SSL_ENGINES) || ((info) == CURLINFO_COOKIELIST))

/* true if info expects a pointer to struct curl_tlssessioninfo * argument */
#define curlcheck_tlssessioninfo_info(info) \
    (((info) == CURLINFO_TLS_SSL_PTR) || ((info) == CURLINFO_TLS_SESSION))

/* true if info expects a pointer to struct curl_certinfo * argument */
#define curlcheck_certinfo_info(info) ((info) == CURLINFO_CERTINFO)

/* true if info expects a pointer to struct curl_socket_t argument */
#define curlcheck_socket_info(info) (CURLINFO_SOCKET < (info) && (info) < CURLINFO_OFF_T)

/* true if info expects a pointer to curl_off_t argument */
#define curlcheck_off_t_info(info) (CURLINFO_OFF_T < (info))

/* typecheck helpers -- check whether given expression has requested type */

/* For pointers, you can use the curlcheck_ptr/curlcheck_arr macros,
 * otherwise define a new macro. Search for __builtin_types_compatible_p
 * in the GCC manual.
 * NOTE: these macros MUST NOT EVALUATE their arguments! The argument is
 * the actual expression passed to the curl_easy_setopt macro. This
 * means that you can only apply the sizeof and __typeof__ operators, no
 * == or whatsoever.
 */

/* XXX: should evaluate to true if expr is a pointer */
#define curlcheck_any_ptr(expr) (sizeof(expr) == sizeof(void *))

/* evaluates to true if expr is NULL */
/* XXX: must not evaluate expr, so this check is not accurate */
#define curlcheck_NULL(expr) (__builtin_types_compatible_p(__typeof__(expr), __typeof__(NULL)))

/* evaluates to true if expr is type*, const type* or NULL */
#define curlcheck_ptr(expr, type)                                                      \
    (curlcheck_NULL(expr) || __builtin_types_compatible_p(__typeof__(expr), type *) || \
     __builtin_types_compatible_p(__typeof__(expr), const type *))

/* evaluates to true if expr is one of type[], type*, NULL or const type* */
#define curlcheck_arr(expr, type) \
    (curlcheck_ptr((expr), type) || __builtin_types_compatible_p(__typeof__(expr), type[]))

/* evaluates to true if expr is a string */
#define curlcheck_string(expr)                                            \
    (curlcheck_arr((expr), char) || curlcheck_arr((expr), signed char) || \
     curlcheck_arr((expr), unsigned char))

/* evaluates to true if expr is a long (no matter the signedness)
 * XXX: for now, int is also accepted (and therefore short and char, which
 * are promoted to int when passed to a variadic function) */
#define curlcheck_long(expr)                                           \
    (__builtin_types_compatible_p(__typeof__(expr), long) ||           \
     __builtin_types_compatible_p(__typeof__(expr), signed long) ||    \
     __builtin_types_compatible_p(__typeof__(expr), unsigned long) ||  \
     __builtin_types_compatible_p(__typeof__(expr), int) ||            \
     __builtin_types_compatible_p(__typeof__(expr), signed int) ||     \
     __builtin_types_compatible_p(__typeof__(expr), unsigned int) ||   \
     __builtin_types_compatible_p(__typeof__(expr), short) ||          \
     __builtin_types_compatible_p(__typeof__(expr), signed short) ||   \
     __builtin_types_compatible_p(__typeof__(expr), unsigned short) || \
     __builtin_types_compatible_p(__typeof__(expr), char) ||           \
     __builtin_types_compatible_p(__typeof__(expr), signed char) ||    \
     __builtin_types_compatible_p(__typeof__(expr), unsigned char))

/* evaluates to true if expr is of type curl_off_t */
#define curlcheck_off_t(expr) (__builtin_types_compatible_p(__typeof__(expr), curl_off_t))

/* evaluates to true if expr is abuffer suitable for CURLOPT_ERRORBUFFER */
/* XXX: also check size of an char[] array? */
#define curlcheck_error_buffer(expr)                                                   \
    (curlcheck_NULL(expr) || __builtin_types_compatible_p(__typeof__(expr), char *) || \
     __builtin_types_compatible_p(__typeof__(expr), char[]))

/* evaluates to true if expr is of type (const) void* or (const) FILE* */
#if 0
#define curlcheck_cb_data(expr) (curlcheck_ptr((expr), void) || curlcheck_ptr((expr), FILE))
#else /* be less strict */
#define curlcheck_cb_data(expr) curlcheck_any_ptr(expr)
#endif

/* evaluates to true if expr is of type FILE* */
#define curlcheck_FILE(expr) \
    (curlcheck_NULL(expr) || (__builtin_types_compatible_p(__typeof__(expr), FILE *)))

/* evaluates to true if expr can be passed as POST data (void* or char*) */
#define curlcheck_postfields(expr)                                 \
    (curlcheck_ptr((expr), void) || curlcheck_arr((expr), char) || \
     curlcheck_arr((expr), unsigned char))

/* helper: __builtin_types_compatible_p distinguishes between functions and
 * function pointers, hide it */
#define curlcheck_cb_compatible(func, type)                  \
    (__builtin_types_compatible_p(__typeof__(func), type) || \
     __builtin_types_compatible_p(__typeof__(func) *, type))

/* evaluates to true if expr is of type curl_resolver_start_callback */
#define curlcheck_resolver_start_callback(expr) \
    (curlcheck_NULL(expr) || curlcheck_cb_compatible((expr), curl_resolver_start_callback))

/* evaluates to true if expr is of type curl_read_callback or "similar" */
#define curlcheck_read_cb(expr)                                                      \
    (curlcheck_NULL(expr) || curlcheck_cb_compatible((expr), __typeof__(fread) *) || \
     curlcheck_cb_compatible((expr), curl_read_callback) ||                          \
     curlcheck_cb_compatible((expr), _curl_read_callback1) ||                        \
     curlcheck_cb_compatible((expr), _curl_read_callback2) ||                        \
     curlcheck_cb_compatible((expr), _curl_read_callback3) ||                        \
     curlcheck_cb_compatible((expr), _curl_read_callback4) ||                        \
     curlcheck_cb_compatible((expr), _curl_read_callback5) ||                        \
     curlcheck_cb_compatible((expr), _curl_read_callback6))
typedef size_t (*_curl_read_callback1)(char *, size_t, size_t, void *);
typedef size_t (*_curl_read_callback2)(char *, size_t, size_t, const void *);
typedef size_t (*_curl_read_callback3)(char *, size_t, size_t, FILE *);
typedef size_t (*_curl_read_callback4)(void *, size_t, size_t, void *);
typedef size_t (*_curl_read_callback5)(void *, size_t, size_t, const void *);
typedef size_t (*_curl_read_callback6)(void *, size_t, size_t, FILE *);

/* evaluates to true if expr is of type curl_write_callback or "similar" */
#define curlcheck_write_cb(expr)                                                         \
    (curlcheck_read_cb(expr) || curlcheck_cb_compatible((expr), __typeof__(fwrite) *) || \
     curlcheck_cb_compatible((expr), curl_write_callback) ||                             \
     curlcheck_cb_compatible((expr), _curl_write_callback1) ||                           \
     curlcheck_cb_compatible((expr), _curl_write_callback2) ||                           \
     curlcheck_cb_compatible((expr), _curl_write_callback3) ||                           \
     curlcheck_cb_compatible((expr), _curl_write_callback4) ||                           \
     curlcheck_cb_compatible((expr), _curl_write_callback5) ||                           \
     curlcheck_cb_compatible((expr), _curl_write_callback6))
typedef size_t (*_curl_write_callback1)(const char *, size_t, size_t, void *);
typedef size_t (*_curl_write_callback2)(const char *, size_t, size_t, const void *);
typedef size_t (*_curl_write_callback3)(const char *, size_t, size_t, FILE *);
typedef size_t (*_curl_write_callback4)(const void *, size_t, size_t, void *);
typedef size_t (*_curl_write_callback5)(const void *, size_t, size_t, const void *);
typedef size_t (*_curl_write_callback6)(const void *, size_t, size_t, FILE *);

/* evaluates to true if expr is of type curl_ioctl_callback or "similar" */
#define curlcheck_ioctl_cb(expr)                                                     \
    (curlcheck_NULL(expr) || curlcheck_cb_compatible((expr), curl_ioctl_callback) || \
     curlcheck_cb_compatible((expr), _curl_ioctl_callback1) ||                       \
     curlcheck_cb_compatible((expr), _curl_ioctl_callback2) ||                       \
     curlcheck_cb_compatible((expr), _curl_ioctl_callback3) ||                       \
     curlcheck_cb_compatible((expr), _curl_ioctl_callback4))
typedef curlioerr (*_curl_ioctl_callback1)(CURL *, int, void *);
typedef curlioerr (*_curl_ioctl_callback2)(CURL *, int, const void *);
typedef curlioerr (*_curl_ioctl_callback3)(CURL *, curliocmd, void *);
typedef curlioerr (*_curl_ioctl_callback4)(CURL *, curliocmd, const void *);

/* evaluates to true if expr is of type curl_sockopt_callback or "similar" */
#define curlcheck_sockopt_cb(expr)                                                     \
    (curlcheck_NULL(expr) || curlcheck_cb_compatible((expr), curl_sockopt_callback) || \
     curlcheck_cb_compatible((expr), _curl_sockopt_callback1) ||                       \
     curlcheck_cb_compatible((expr), _curl_sockopt_callback2))
typedef int (*_curl_sockopt_callback1)(void *, curl_socket_t, curlsocktype);
typedef int (*_curl_sockopt_callback2)(const void *, curl_socket_t, curlsocktype);

/* evaluates to true if expr is of type curl_opensocket_callback or
   "similar" */
#define curlcheck_opensocket_cb(expr)                                                     \
    (curlcheck_NULL(expr) || curlcheck_cb_compatible((expr), curl_opensocket_callback) || \
     curlcheck_cb_compatible((expr), _curl_opensocket_callback1) ||                       \
     curlcheck_cb_compatible((expr), _curl_opensocket_callback2) ||                       \
     curlcheck_cb_compatible((expr), _curl_opensocket_callback3) ||                       \
     curlcheck_cb_compatible((expr), _curl_opensocket_callback4))
typedef curl_socket_t (*_curl_opensocket_callback1)(void *, curlsocktype, struct curl_sockaddr *);
typedef curl_socket_t (*_curl_opensocket_callback2)(void *, curlsocktype,
                                                    const struct curl_sockaddr *);
typedef curl_socket_t (*_curl_opensocket_callback3)(const void *, curlsocktype,
                                                    struct curl_sockaddr *);
typedef curl_socket_t (*_curl_opensocket_callback4)(const void *, curlsocktype,
                                                    const struct curl_sockaddr *);

/* evaluates to true if expr is of type curl_progress_callback or "similar" */
#define curlcheck_progress_cb(expr)                                                     \
    (curlcheck_NULL(expr) || curlcheck_cb_compatible((expr), curl_progress_callback) || \
     curlcheck_cb_compatible((expr), _curl_progress_callback1) ||                       \
     curlcheck_cb_compatible((expr), _curl_progress_callback2))
typedef int (*_curl_progress_callback1)(void *, double, double, double, double);
typedef int (*_curl_progress_callback2)(const void *, double, double, double, double);

/* evaluates to true if expr is of type curl_debug_callback or "similar" */
#define curlcheck_debug_cb(expr)                                                     \
    (curlcheck_NULL(expr) || curlcheck_cb_compatible((expr), curl_debug_callback) || \
     curlcheck_cb_compatible((expr), _curl_debug_callback1) ||                       \
     curlcheck_cb_compatible((expr), _curl_debug_callback2) ||                       \
     curlcheck_cb_compatible((expr), _curl_debug_callback3) ||                       \
     curlcheck_cb_compatible((expr), _curl_debug_callback4) ||                       \
     curlcheck_cb_compatible((expr), _curl_debug_callback5) ||                       \
     curlcheck_cb_compatible((expr), _curl_debug_callback6) ||                       \
     curlcheck_cb_compatible((expr), _curl_debug_callback7) ||                       \
     curlcheck_cb_compatible((expr), _curl_debug_callback8))
typedef int (*_curl_debug_callback1)(CURL *, curl_infotype, char *, size_t, void *);
typedef int (*_curl_debug_callback2)(CURL *, curl_infotype, char *, size_t, const void *);
typedef int (*_curl_debug_callback3)(CURL *, curl_infotype, const char *, size_t, void *);
typedef int (*_curl_debug_callback4)(CURL *, curl_infotype, const char *, size_t, const void *);
typedef int (*_curl_debug_callback5)(CURL *, curl_infotype, unsigned char *, size_t, void *);
typedef int (*_curl_debug_callback6)(CURL *, curl_infotype, unsigned char *, size_t, const void *);
typedef int (*_curl_debug_callback7)(CURL *, curl_infotype, const unsigned char *, size_t, void *);
typedef int (*_curl_debug_callback8)(CURL *, curl_infotype, const unsigned char *, size_t,
                                     const void *);

/* evaluates to true if expr is of type curl_ssl_ctx_callback or "similar" */
/* this is getting even messier... */
#define curlcheck_ssl_ctx_cb(expr)                                                     \
    (curlcheck_NULL(expr) || curlcheck_cb_compatible((expr), curl_ssl_ctx_callback) || \
     curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback1) ||                       \
     curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback2) ||                       \
     curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback3) ||                       \
     curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback4) ||                       \
     curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback5) ||                       \
     curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback6) ||                       \
     curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback7) ||                       \
     curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback8))
typedef CURLcode (*_curl_ssl_ctx_callback1)(CURL *, void *, void *);
typedef CURLcode (*_curl_ssl_ctx_callback2)(CURL *, void *, const void *);
typedef CURLcode (*_curl_ssl_ctx_callback3)(CURL *, const void *, void *);
typedef CURLcode (*_curl_ssl_ctx_callback4)(CURL *, const void *, const void *);
#ifdef HEADER_SSL_H
/* hack: if we included OpenSSL's ssl.h, we know about SSL_CTX
 * this will of course break if we are included before OpenSSL headers...
 */
typedef CURLcode (*_curl_ssl_ctx_callback5)(CURL *, SSL_CTX *, void *);
typedef CURLcode (*_curl_ssl_ctx_callback6)(CURL *, SSL_CTX *, const void *);
typedef CURLcode (*_curl_ssl_ctx_callback7)(CURL *, const SSL_CTX *, void *);
typedef CURLcode (*_curl_ssl_ctx_callback8)(CURL *, const SSL_CTX *, const void *);
#else
typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback5;
typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback6;
typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback7;
typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback8;
#endif

/* evaluates to true if expr is of type curl_conv_callback or "similar" */
#define curlcheck_conv_cb(expr)                                                     \
    (curlcheck_NULL(expr) || curlcheck_cb_compatible((expr), curl_conv_callback) || \
     curlcheck_cb_compatible((expr), _curl_conv_callback1) ||                       \
     curlcheck_cb_compatible((expr), _curl_conv_callback2) ||                       \
     curlcheck_cb_compatible((expr), _curl_conv_callback3) ||                       \
     curlcheck_cb_compatible((expr), _curl_conv_callback4))
typedef CURLcode (*_curl_conv_callback1)(char *, size_t length);
typedef CURLcode (*_curl_conv_callback2)(const char *, size_t length);
typedef CURLcode (*_curl_conv_callback3)(void *, size_t length);
typedef CURLcode (*_curl_conv_callback4)(const void *, size_t length);

/* evaluates to true if expr is of type curl_seek_callback or "similar" */
#define curlcheck_seek_cb(expr)                                                     \
    (curlcheck_NULL(expr) || curlcheck_cb_compatible((expr), curl_seek_callback) || \
     curlcheck_cb_compatible((expr), _curl_seek_callback1) ||                       \
     curlcheck_cb_compatible((expr), _curl_seek_callback2))
typedef CURLcode (*_curl_seek_callback1)(void *, curl_off_t, int);
typedef CURLcode (*_curl_seek_callback2)(const void *, curl_off_t, int);

#endif /* CURLINC_TYPECHECK_GCC_H */
